The breasts of womenseem to age more promptly than the rest of their trunk , according to fresh research which uses deoxyribonucleic acid analysis of tissue and blood to measure the pace of cell decline .
As we get on , the chemical substance signature of our DNA changes subtly , with genes becoming more or less methylated ( that is , they plunk up or lose certain methyl chemical groups ) in a process known as epigentics . Now , Steve Horvath at the University of California , Los Angeles has used that knowledge to estimate age , reports New Scientist .
They took 7,844 healthy tissue samples from 51 dissimilar types of tissue , with participant age ranging from fetus to 101 . Then , they analyzed how methylation change between site , allowing them to identify a subset of 353 regions of the genome that became either more or less methylated with geezerhood in almost all type of tissue . In turn , that can be flip out on its head to show the apparent historic period of tissue paper — a technique they validated against thousands of other sample .
The interesting result is that some parts of the body seem to age faster than others . salubrious chest tissue , for deterrent example , was on mediocre two to three yr older than the woman ’s actual age . Elsewhere , heart tissue paper in both sexes appear nine years younger than truthful age . The researchis published in Genome Biology .
It ’s not just a strange scientific quirkiness , though . Because the proficiency can be used on roue , the researchers exact it could be used forensically , to reveal the eld of a murder defendant , say . [ Genome BiologyviaNew Scientist ]
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